<html xmlns="http://www.w3.org/1999/xhtml" xmlns:html="http://www.w3.org/1999/xhtml">
<head>

<bindings xmlns="http://www.mozilla.org/xbl">
  <binding id="ab"><content><html:span>a b<children/></html:span></content></binding>
  <binding id="empty"><content></content></binding>
</bindings>

<script type="text/javascript">

function boom()
{
  document.getElementById("td").style.MozBinding = "url('#empty')";
}

</script>

</head>

<body onload="boom();"><div style="width: 1px;"><span style="-moz-binding: url(#ab);"><td id="td"/></span></div></body>
</html>
